html,body{
    margin: 0px;
}
 #head{
    width: 1920px;
    height:110px;
    position: relative;
    margin: 0 auto;
} 
#bg-left{
    width:320px;
    height: 110px;
    position: absolute;
    left: 0;
    bottom:0;
    background-image: url(img/bg_left.png);
    background-size: 100% 110px;
}
#bg-right{
    width:320px;
    height: 78px;
    position: absolute;
    right: 0;
    bottom: 0;
    background-image: url(img/bg_center.png);
    background-size: 300% 300%;
    background-position-x: 1500px;
    
}
#header{
    width: 1280px;
    height: 110px;
    margin: 0 auto;
    position: relative;
    
}
#logo{
    margin-top: -3px;
    margin-left: 40px;
    display: inline-block;
}
#nav{
    width: 1280px;
    height: 78px;
    position: absolute;
    bottom: 0;
    background-image: url(img/bg_center.png);
    background-size: 100% 100%;
}
#nav-top ul{
    width: 300px;
    height: 30px;
    float: right;
    margin: 0px;
    margin-right: 25px;
}
#nav-top ul li{
    font-size: 13px;
    display: inline-block;
    color:#97978f;
    text-align: center;
    line-height: 30px;
    cursor: pointer;   
}
#nav-top ul li:hover{
    color: #ec6800;
}
#nav-bottom {
    float: right;
    
}
#nav-bottom ul{
    height: 80px;
    width: 976px;
    list-style: none;
    display: flex;
    justify-content: space-around;
    margin: 0px;
    padding: 0px;
}
#nav-bottom ul li{
    font-size: 14px;
    color: white;
    line-height: 80px;
    height: 80px;
    cursor: pointer;
}
#nav-bottom ul li:hover{
    border-bottom: 3px solid #727171;
    box-sizing: border-box;
}
#banner{
    height: 450px;
    width: 1450px;
    margin: 0 auto;
    background-image: url(img/banner3.jpg);
    background-size: 100% 100%;

}
#main1{
    width: 1280px;
    height: 240px;
    margin: 0 auto;
}
#main1 ul{
    width: 1280px;
    height: 240px;
    display: flex;
    justify-content: space-around;
    list-style: none;
}
#main1 ul li img{
    margin-top: 38px;
    width: 138px;
    height: 138px; 
}
#main1 ul li h4{
    text-align: center;
    font-size: 20px;
    font-weight: 500;
    color: #666464;
}
#main1 ul li:hover h4{
    color: #ec6800;
}

#l1{
    width: 400px;
    background-color: #ec6800;
    padding: 20px;
}
#l1 #h4{
    width: 400px;
    height: 27px;
    font-size: 20px;
    font-weight: 500;
    color: white;
    margin: 0px;
    margin:5px 0; 
    
}

#textarea{
    width: 380px;
    height: 86px;
    padding: 10px;
}

#l1 p{
    display: block;
    width: 80px;
    margin: 0 auto;
    margin-top:20px ;
    font-size: 20px;
    font-weight: 500;
    color: white;
    cursor: pointer;
    
}
#l1 p:hover{
    text-decoration: underline;
}
#d1 img:hover{
    
   
    
}

